Henning Höpfner
Henning Höpfner
Photonics and Terahertz Technology, Ruhr-University Bochum, Germany
Verified email at ruhr-uni-bochum.de
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Year
Ultrafast spin-induced polarization oscillations with tunable lifetime in vertical-cavity surface-emitting lasers
NC Gerhardt, MY Li, H Jähme, H Höpfner, T Ackemann, MR Hofmann
Applied Physics Letters 99, 151107, 2011
1002011
Birefringence controlled room-temperature picosecond spin dynamics close to the threshold of vertical-cavity surface-emitting laser devices
MY Li, H Jähme, H Soldat, NC Gerhardt, MR Hofmann, T Ackemann
Applied Physics Letters 97, 191114, 2010
592010
Controlled switching of ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting lasers
H Höpfner, M Lindemann, NC Gerhardt, MR Hofmann
Applied Physics Letters 104 (2), 022409, 2014
582014
Photorefractive two-wave mixing for image amplification in digital holography
N Koukourakis, T Abdelwahab, MY Li, H Höpfner, YW Lai, E Darakis, ...
Optics Express 19 (22), 22004-22023, 2011
422011
Room temperature spin relaxation length in spin light-emitting diodes
H Soldat, M Li, NC Gerhardt, MR Hofmann, A Ludwig, A Ebbing, D Reuter, ...
Applied Physics Letters 99, 051102, 2011
352011
Depth-filtered digital holography
N Koukourakis, V Jaedicke, A Adinda-Ougba, S Goebel, H Wiethoff, ...
Optics Express 20 (20), 22636-22648, 2012
152012
Electrical spin injection in InAs quantum dots at room temperature and adjustment of the emission wavelength for spintronic applications
A Ludwig, R Roescu, AK Rai, K Trunov, F Stromberg, M Li, H Soldat, ...
Journal of Crystal Growth 323 (1), 376-379, 2011
152011
Magnetic field dependence of the spin relaxation length in spin light-emitting diodes
H Höpfner, C Fritsche, A Ludwig, A Ludwig, F Stromberg, H Wende, ...
Applied Physics Letters 101 (11), 112402, 2012
122012
Polarization dynamics in spin-polarized vertical-cavity surface-emitting lasers
NC Gerhardt, H Höpfner, M Lindemann, MR Hofmann
SPIE NanoScience+ Engineering, 916703-916703-10, 2014
72014
Ultrafast circular polarization oscillations in spin-polarized vertical-cavity surface-emitting laser devices
NC Gerhardt, M Li, H Jaehme, H Soldat, MR Hofmann, T Ackemann
Proceedings of SPIE 7597, 75970Q, 2010
72010
Ultrafast polarization dynamics with controlled polarization oscillations in vertical-cavity surface-emitting lasers
M Lindemann, H Höpfner, NC Gerhardt, MR Hofmann, T Pusch, ...
SPIE OPTO, 93810I-93810I-7, 2015
52015
Quantum Dot Spintronics: Fundamentals and Applications
A Ludwig, B Sothmann, H Höpfner, N Gerhardt, J Nannen, T Kümmell, ...
Magnetic Nanostructures, 235-268, 2013
52013
Room temperature spin relaxation in quantum dot based spin-optoelectronic devices
H Höpfner, M Li, A Ludwig, A Ludwig, F Stromberg, H Wende, W Keune, ...
Proceedings of SPIE 8260, 82600A, 2012
32012
Controlled switching and frequency tuning of polarization oscillations in vertical-cavity surface-emitting lasers
M Lindemann, H Höpfner, NC Gerhardt, MR Hofmann, T Pusch, ...
SPIE Nanoscience+ Engineering, 95512Z-95512Z-5, 2015
12015
Spin injection, transport, and relaxation in spin light-emitting diodes: magnetic field effects
H Höpfner, C Fritsche, A Ludwig, A Ludwig, F Stromberg, H Wende, ...
SPIE NanoScience+ Engineering, 881318-881318-6, 2013
12013
Ultrafast spin-polarized vertical-cavity surface-emitting lasers
NC Gerhardt, H Höpfner, M Lindemann, M Li, H Jähme, T Ackemann, ...
SPIE NanoScience+ Engineering, 88132A-88132A-8, 2013
12013
Spin relaxation length in quantum dot spin LEDs
H Höpfner, C Fritsche, A Ludwig, A Ludwig, F Stromberg, H Wende, ...
physica status solidi (c), 2013
12013
Birefringence and spin controlled ultrafast polarization oscillations in vertical-cavity surface-emitting lasers
MY Li, H Jaehme, H Soldat, NC Gerhardt, MR Hofmann, T Ackemann
The European Conference on Lasers and Electro-Optics, 2011
12011
Towards high-frequency operation of polarization oscillations in spin vertical-cavity surface-emitting lasers
M Lindemann, H Höpfner, NC Gerhardt, MR Hofmann, T Pusch, ...
SPIE Nanoscience+ Engineering, 95512O-95512O-5, 2015
2015
Spin-controlled ultrafast vertical-cavity surface-emitting lasers
H Höpfner, M Lindemann, NC Gerhardt, MR Hofmann
SPIE Photonics Europe, 913408-913408-6, 2014
2014
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